Device and system for reflective digital light processing (DLP)

• US 8,830,555 B2
• Filed: 06/20/2011
• Issued: 09/09/2014
• Est. Priority Date: 11/09/2006
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Aksamit, Slavek P., Chudy, David D., Medina, Cristian
• Primary Examiner(s): CHOI, WILLIAM C
• Application Number:
  US13/164,174
• Publication Number:
  US 20120019573A1
• Time in Patent Office: 1,177 Days
• Field of Search: 359/201.2, 359/212.1, 359/214.1, 359/223.1, 359/290, 359/298, 359265-275
• US Class Current: 359/267
• CPC Class Codes: G02B 5/23 Photochromic filters
• CPC Class Codes: G02F 1/15165 Polymers
• CPC Class Codes: G02F 1/1524 Transition metal compounds
• CPC Class Codes: G02F 1/157 Structural association of cells with optical devices, e.g. reflectors or illuminating devices
• CPC Class Codes: G02F 1/163 Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
• CPC Class Codes: G02F 2203/02 reflective
• CPC Class Codes: H04N 9/3111 for displaying the colours sequentially, e.g. by using sequentially activated light sources sequential projection in colour photography G03B33/08
• CPC Class Codes: H04N 9/3197 using light modulating optical valves

Abstract

Aspects of the present invention include systems for reflective digital light processing (DLP). Embodiments include a light source, a plurality of optically reflective switching devices each having an optically reflective layer in contact with a substrate; a circuit means and power source; controller logic; a projection means; and a display means; wherein each of said plurality of devices is a capable of receiving light from said light source and thereafter reflecting said received light in direct response to a reflective state condition of said each device.

Claims

1. A display system comprising:

a light source;

a plurality of optically reflective switching devices each having an optically reflective layer in contact with a substrate, the optically reflective layer capable of being switched from a reflective state to a transparent state;

a circuit means and power source;

controller logic;

a projection means;

and a display means;

wherein each of said plurality of devices is capable of receiving light from said light source and thereafter reflecting said received light in direct response to a reflective state condition of said each device and also, in a transparent state condition, receiving light from said light source and thereafter passing said received light through without reflection in direct response to a transparent state condition of said each device.

2. The system of claim 1, wherein said plurality of devices is an array of devices arranged and aligned in a matrix.

3. The system of claim 1, wherein a gap between a device edge and an adjacent edge of an adjacent device in said array is no greater than twenty microns.

4. The system of claim 1, wherein said layer is a film.

5. The system of claim 1, wherein said layer is bonded or grown on said substrate.

6. The system of claim 1, wherein said circuit means is one of a printed circuit board, firmware, software, electrical signal modulator, or integrated circuit.

7. The system of claim 1, wherein said controller logic controls said power source to determine an electrical signal to be supplied to one or more devices of said array at predetermined time.

8. The system of claim 1 further comprising a color wheel.

9. The system of claim 8, wherein said color wheel is controlled concurrently by said controller logic.

10. The system of claim 4, wherein said film includes a transition metal of at least one of Ti, V, Cr, Mn, Fe, Go, Ni, Cu, Zn, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, Hf, Ta, W, Re, Os, Ir, Pt, Au and Hg, and said film of each device is in one of a first reflective state or a second reflective state in relation to said controller.

11. The system of claim 1, said circuit means is an electrical circuit, said project means is a projection lens and said display means is a display screen.

12. The system of claim 1, wherein said plurality of devices are fixedly arranged and aligned in a matrix format in said array.

13. The system of claim 1 further including an active light source and an active power source controlled by said controller logic.

14. The system of claim 1, wherein said system is usable to receive remotely transmitted imagery for display.